Automatic riveting mechanism for scissors

Abstract

The utility model relates to the technical field of scissor riveting, and discloses an automatic scissor riveting mechanism which comprises a top die and a pressing machine, the top die comprises a machine frame, an electric cylinder is fixedly installed on the top of the machine frame, a lower pressing disc is fixed to the movable end of the electric cylinder, a lower pressing rod is installed at the circle center of the bottom of the lower pressing disc, and the lower pressing rod is connected with the pressing machine. A mounting plate is fixedly mounted at the top of an inner cavity of the rack through a vertical rod, a connecting plate is arranged at the bottom of the mounting plate, and a clamping nozzle is fixedly mounted in the middle of the bottom of the connecting plate. According to the automatic scissor riveting mechanism, after a scissor handle flows to a riveting station through a series of actions, the buoyancy center mold moves upwards, the lower pressing rod moves downwards, rivets in a clamping nozzle head are pressed to the position of the scissor handle, and the rivets flow out after riveting is completed, so that the problems that a traditional riveting machine is high in price, the operation requirement of staff is high, and the tedious process needs to be completed through cooperation of multiple persons are solved; the number of production workers is reduced, and meanwhile the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of scissors riveting, in particular to an automatic scissors riveting mechanism. Background Art

[0002] Scissors are double-edged tools for cutting sheet or linear objects such as cloth, paper, steel plates, ropes, round steel, etc. The two blades are staggered and can be opened. When processing the scissors, the two scissor handles need to be riveted together and used together.

[0003] With regard to the existing related technologies, the inventors believe that the following defects often exist: when riveting two scissors handles, the two scissors handles are manually placed on a jig, a start button is pressed, the riveting machine is activated, the riveting shaping is completed, and finally the scissors are manually taken out and merged. Because this technology is open, employees face the riveting area of ​​the device directly. There are certain unsafe factors when employees directly participate in it, and the efficiency is low and the production cost is high.

[0004] Therefore, we propose a scissors automatic riveting mechanism. Utility Model Content

[0005] In view of the above-mentioned prior art, when riveting two scissors handles, the two scissors handles are manually placed on a jig, a start button is pressed, a riveting machine is activated, the riveting shaping is completed, and finally the scissors are manually taken out and combined. Since this technology is open, employees face the riveting area of ​​the device directly. There are certain unsafe factors faced by employees who directly participate, and the efficiency is low and the production cost is high. Therefore, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a scissors automatic riveting mechanism, which aims to solve the problems of high price of traditional riveting machines, high operating requirements for employees, and the need for multiple people to cooperate to complete complicated processes, thereby reducing the number of people employed in production and improving work efficiency.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a scissors automatic riveting mechanism, comprising a top die and a press, the top die is installed below the conveyor line, and the press is installed above the conveyor line;

[0008] The top mold includes a frame, an electric cylinder is fixedly installed on the top of the frame, a lower pressure plate is fixed on the movable end of the electric cylinder, a lower pressure rod is installed at the center of the bottom of the lower pressure plate, a mounting plate is fixedly installed on the top of the inner cavity of the frame through a vertical rod, a connecting plate is provided at the bottom of the mounting plate, and a nozzle head is fixedly installed in the middle of the bottom of the connecting plate;

[0009] The top mold includes a frame and a fixed connecting plate, a cam is rotatably installed inside the frame, a driving plate is provided on the cam side of the cam, and the frame and the driving plate are connected by a reset assembly, lifting slide columns are installed on both sides of the top of the driving plate, and sliding sleeves that slide with the lifting slide columns are inserted and installed on both sides of the fixed connecting plate, a floating core mold is fixedly connected between the tops of the two lifting slide columns, and a positioning pin is installed in the middle of the top of the floating core mold.

[0010] As a preferred solution of the automatic riveting mechanism of scissors described in the utility model, wherein: a pressing and holding assembly is installed inside the frame, and the pressing and holding assembly includes a mounting cross plate installed in the inner cavity of the frame, and an electric telescopic rod 2 is installed at the end surface of the mounting cross plate away from the clamping head, and a lifting plate is fixedly installed at the movable end of the electric telescopic rod 2, and pressure columns are installed at both side corner ends of the lifting plate.

[0011] As a preferred solution of the automatic riveting mechanism for scissors described in the utility model, the frame is fixedly installed with a servo motor through a connecting plate installed on one side thereof, a mounting shaft is rotatably installed in the inner cavity of the frame through a bearing, sprockets are installed at the driving end of the servo motor and one end of the mounting shaft close to the reset assembly, and a chain is installed between the two sprockets.

[0012] As a preferred solution of the automatic riveting mechanism for scissors described in the utility model, wherein: a connecting wheel is rotatably mounted on the side of the driving plate away from the reset assembly through a connecting block, and the outer wall surface of the cam contacts the outer wall surface of the connecting wheel.

[0013] As a preferred solution of the automatic riveting mechanism of scissors described in the utility model, an electric telescopic rod is fixedly installed on the bottom of the frame through a bracket, the movable end of the electric telescopic rod is fixedly connected to a tensioning disk, and the top arc surface of the tensioning disk is in contact with the outer wall surface of the chain.

[0014] As a preferred solution of the automatic riveting mechanism of scissors described in the utility model, the reset assembly includes two connecting columns, the front ends of the connecting columns are welded with hexagonal nuts, the threaded holes of the hexagonal nuts are threadedly installed with hexagonal bolts, and a hanging spring is installed between the two hexagonal bolts.

[0015] As a preferred solution of the automatic riveting mechanism of scissors described in the utility model, a baffle is installed on one side of the top of the floating core mold, and a limit switch is installed on the top of the fixed connecting plate and below the baffle.

[0016] Beneficial effects of the utility model:

[0017] 1. In the utility model, after the scissors handle flows to the riveting station through a series of actions, the floating center mold moves upward, and the lower pressure rod moves downward to press the rivet inside the clamping head to the knife handle, and the rivet flows out after the riveting is completed. This solves the problems of high price of traditional riveting machines, high operating requirements for employees, and the need for multiple people to cooperate to complete cumbersome processes, reduces the number of people employed in production, and improves work efficiency at the same time. Workers do not need to face the riveting processing area directly, and do not need to face unsafe factors directly, so the safety factor is high.

[0018] 2. In the utility model, the extension of the electric telescopic rod will move the tensioning plate toward the direction of the chain, so that the tensioning plate moves upward against the chain to deform the chain and tighten the chain. The chain has high tension, ensuring the transmission effect of the two sprockets and the chain. Moreover, when the tensioning plate moves away from one side of the chain, the tension of the chain becomes worse and the chain becomes loose, which is convenient for disassembly and replacement of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 The utility model is a schematic diagram of the overall structure of a scissors automatic riveting mechanism.

[0021] Figure 2 The utility model is a structural schematic diagram of a press machine of a scissors automatic riveting mechanism.

[0022] Figure 3 The utility model is a structural schematic diagram of a pressing component of an automatic riveting mechanism of scissors.

[0023] Figure 4 The utility model is a schematic structural diagram of a top die of a scissors automatic riveting mechanism.

[0024] Figure 5 The utility model is a schematic structural diagram of a cam-driven floating center mold lifting and lowering of a scissors automatic riveting mechanism.

[0025] Figure 6 The utility model is a structural schematic diagram of a reset component of an automatic riveting mechanism of scissors.

[0026] Description of reference numerals:

[0027] 1. Top mold; 11. Frame; 12. Servo motor; 13. Sprocket; 14. Electric telescopic rod one; 15. Tension plate; 16. Chain; 17. Reset assembly; 171. Connecting column; 172. Hexagonal nut; 173. Hexagonal bolt; 174. Hanging spring; 18. Cam; 19. Drive plate; 110. Lifting slide column; 111. Fixed connecting plate; 112. Floating center mold; 113. Positioning pin; 114. Stop bar; 115. Limit switch; 116. Mounting shaft; 117. Connecting wheel; 2. Press; 21. Frame; 22. Electric cylinder; 23. Lower pressure plate; 24. Mounting plate; 25. Connecting plate; 26. Clamp head; 27. Lower pressure rod; 28. Holding assembly; 281. Mounting cross plate; 282. Electric telescopic rod two; 283. Lifting plate; 284. Press column. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Reference Figure 1-6 , which is an embodiment of the utility model, provides a scissors automatic riveting mechanism, which includes a top die 1 and a press 2, wherein the top die 1 is installed below the conveyor line, and the press 2 is installed above the conveyor line;

[0030] The top mold 1 includes a frame 21, an electric cylinder 22 is fixedly installed on the top of the frame 21, and the movable end of the electric cylinder 22 is located in the inner cavity of the frame 21, a lower pressure plate 23 is fixed on the movable end of the electric cylinder 22, a lower pressure rod 27 is installed at the center of the bottom of the lower pressure plate 23, a mounting plate 24 is fixedly installed on the top of the inner cavity of the frame 21 through a vertical rod, a connecting plate 25 is provided at the bottom of the mounting plate 24, a nozzle head 26 is fixedly installed in the middle of the bottom of the connecting plate 25, and the lower pressure rod 27 is directly above the material cavity of the nozzle head 26;

[0031] The top mold 1 includes a frame 11 and a fixed connecting plate 111, and connecting vertical plates are installed at the four corner ends of the frame 11. The top mold 1 is installed below the conveyor line through the connecting vertical plates. The fixed connecting plate 111 is fixed below the conveyor line. A cam 18 is installed for rotation inside the frame 11. A driving plate 19 is provided on the cam side of the cam 18, and the frame 11 and the driving plate 19 are connected by a reset assembly 17. Lifting slides 110 are installed on both sides of the top of the driving plate 19, and sliding sleeves that slide with the lifting slides 110 are inserted on both sides of the fixed connecting plate 111. A floating core mold 112 is fixedly connected between the tops of the two lifting slides 110, and a positioning pin 113 is installed in the middle of the top of the floating core mold 112.

[0032] After the scissors handle goes through a series of actions and flows to the riveting station, the floating mold 112 moves upward, and the lower pressure rod 27 moves downward to press the rivet inside the nozzle head 26 to the handle, and it flows out after riveting is completed. This solves the problems of high prices of traditional riveting machines, high operating requirements for employees, and the need for multiple people to cooperate to complete cumbersome processes, reduces the number of people employed in production, and improves work efficiency at the same time. Workers do not need to face the riveting processing area directly, and do not need to face unsafe factors directly, so the safety factor is high.

[0033] A pressing assembly 28 is installed inside the frame 21, and the pressing assembly 28 includes a mounting cross plate 281 installed in the inner cavity of the frame 21, and an electric telescopic rod 282 is installed at the end surface of the mounting cross plate 281 away from the nozzle head 26, and a lifting plate 283 is fixedly installed on the movable end of the electric telescopic rod 282, and pressure columns 284 are installed on both side corner ends of the lifting plate 283.

[0034] The frame 11 is fixedly mounted with a servo motor 12 via a connecting plate installed on one side thereof, a mounting shaft 116 is rotatably mounted in the inner cavity of the frame 11 via a bearing, a sprocket 13 is mounted on the driving end of the servo motor 12 and one end of the mounting shaft 116 close to the reset assembly 17, and a chain 16 is installed between the two sprockets 13.

[0035] A connecting wheel 117 is installed on the side of the driving plate 19 away from the reset assembly 17 through a connecting block, and the outer wall surface of the cam 18 contacts the outer wall surface of the connecting wheel 117. The cam 18 and the connecting wheel 117 adopt rolling contact, the friction coefficient is low, and the driving plate 19 is lifted and lowered more smoothly.

[0036] An electric telescopic rod 14 is fixedly installed at the bottom of the frame 11 through a bracket, and a tensioning plate 15 is fixedly connected to the movable end of the electric telescopic rod 14, and the top arc surface of the tensioning plate 15 is in contact with the outer wall surface of the chain 16. The extension of the electric telescopic rod 14 will move the tensioning plate 15 in the direction of the chain 16, so that the tensioning plate 15 moves upward against the chain 16 to deform the chain 16 and tension the chain 16. The chain 16 has high tension to ensure the transmission effect of the two sprockets 13 and the chain 16, and when the tensioning plate 15 moves away from one side of the chain 16, the tension of the chain 16 becomes worse, and the chain 16 becomes loose, which is convenient for disassembly and replacement of the chain 16.

[0037] The reset assembly 17 includes two connecting columns 171, and the two connecting columns 171 are respectively fixed on the driving plate 19 and the frame 11. A hexagonal nut 172 is welded to the front end of the connecting column 171. A hexagonal bolt 173 is threadedly installed in the threaded hole of the hexagonal nut 172. A hanging spring 174 is installed between the two hexagonal bolts 173. When the driving plate 19 moves upward, the hanging spring 174 will be stretched. When the driving plate 19 falls, the elastic action of the hanging spring 174 will accelerate the downward movement of the driving plate 19, and the driving plate 19 is reset.

[0038] A stop bar 114 is installed on one side of the top of the floating core mold 112 , and a limit switch 115 is installed on the top of the fixed connecting plate 111 and below the stop bar 114 .

[0039] During use, the rivet is located inside the clamping head 26. When the two scissor handles are conveyed by the assembly line to between the top die 1 and the press 2, the electric cylinder 22 extends to move the lower pressing rod 27 downward, and the lower pressing rod 27 pushes the inside of the clamping head 26 downward. At the same time, the servo motor 12 drives the sprocket 13 on one side to rotate. Under the transmission action of the two sprockets 13 and the chain 16, the servo motor 12 drives the installation shaft 116 to rotate, which directly drives the cam 18 to rotate. When the driving plate 19 moves upward, the floating mold 112 is driven upward by the lifting slide column 110, so that the sprocket 13 and the lower pressure rod 27 are moved toward the direction of the scissors handles, and the rivet is pressed into the rivet hole between the two scissors handles. The two scissors handles are riveted together by the rivets. After the riveting is completed, the lower pressure rod 27 moves upward, the positioning pin 113 moves downward, and then the assembly line drives the formed scissors to flow out backwards.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A scissors automatic riveting mechanism, characterized in that: It comprises a top mold (1) and a press (2), wherein the top mold (1) is installed below the conveyor line, and the press (2) is installed above the conveyor line; The top mold (1) comprises a frame (21), an electric cylinder (22) is fixedly mounted on the top of the frame (21), a lower pressure plate (23) is fixedly mounted on the movable end of the electric cylinder (22), a lower pressure rod (27) is mounted at the center of the bottom of the lower pressure plate (23), a mounting plate (24) is fixedly mounted on the top of the inner cavity of the frame (21) via a vertical rod, a connecting plate (25) is arranged at the bottom of the mounting plate (24), and a nozzle head (26) is fixedly mounted in the middle of the bottom of the connecting plate (25); The top mold (1) comprises a frame (11) and a fixed connecting plate (111); a cam (18) is rotatably installed inside the frame (11); a driving plate (19) is arranged on the cam edge of the cam (18); the frame (11) and the driving plate (19) are connected via a reset assembly (17); lifting slides (110) are installed on both sides of the top of the driving plate (19); and sliding sleeves that slide with the lifting slides (110) are inserted and installed on both sides of the fixed connecting plate (111); a floating core mold (112) is fixedly connected between the tops of the two lifting slides (110); and a positioning pin (113) is installed in the middle of the top of the floating core mold (112).

2. The automatic riveting mechanism for scissors according to claim 1, characterized in that: A holding assembly (28) is installed inside the frame (21), and the holding assembly (28) includes a mounting cross plate (281) mounted in the inner cavity of the frame (21), and an electric telescopic rod 2 (282) is installed at the end surface of the mounting cross plate (281) away from the nozzle head (26), and a lifting plate (283) is fixedly installed at the movable end of the electric telescopic rod 2 (282), and pressure columns (284) are installed at the two side corner ends of the lifting plate (283).

3. The automatic riveting mechanism for scissors according to claim 2, characterized in that: The frame (11) is fixedly mounted with a servo motor (12) via a connecting plate mounted on one side thereof; a mounting shaft (116) is rotatably mounted in an inner cavity of the frame (11) via a bearing; a sprocket (13) is mounted on the driving end of the servo motor (12) and one end of the mounting shaft (116) close to the reset assembly (17); and a chain (16) is mounted between the two sprockets (13).

4. The automatic riveting mechanism for scissors according to claim 3, characterized in that: A connecting wheel (117) is rotatably mounted on the side of the driving plate (19) away from the reset assembly (17) through a connecting block, and the outer wall surface of the cam (18) contacts the outer wall surface of the connecting wheel (117).

5. The automatic riveting mechanism for scissors according to claim 4, characterized in that: An electric telescopic rod (14) is fixedly mounted on the bottom of the frame (11) via a bracket, a tensioning plate (15) is fixedly connected to the movable end of the electric telescopic rod (14), and the top arc surface of the tensioning plate (15) contacts the outer wall surface of the chain (16).

6. The automatic riveting mechanism for scissors according to claim 5, characterized in that: The reset assembly (17) comprises two connecting columns (171), a hexagonal nut (172) is welded to the front end of the connecting column (171), a hexagonal bolt (173) is threadedly installed in the threaded hole of the hexagonal nut (172), and a hanging spring (174) is installed between the two hexagonal bolts (173).

7. The automatic riveting mechanism for scissors according to claim 6, characterized in that: A baffle (114) is installed on one side of the top of the floating core mold (112), and a limit switch (115) is installed on the top of the fixed connecting plate (111) and below the baffle (114).

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